244 static int st95hf_send_recv_cmd(struct st95hf_context *st95context,  in st95hf_send_recv_cmd()  argument
252 	struct device *dev = &st95context->spicontext.spidev->dev;  in st95hf_send_recv_cmd()
275 	ret = st95hf_spi_send(&st95context->spicontext,  in st95hf_send_recv_cmd()
287 		ret = st95hf_spi_recv_response(&st95context->spicontext,  in st95hf_send_recv_cmd()
305 static int st95hf_echo_command(struct st95hf_context *st95context)  in st95hf_echo_command()  argument
310 	result = st95hf_send_recv_cmd(st95context, CMD_ECHO, 0, NULL, false);  in st95hf_echo_command()
315 	result = st95hf_spi_recv_echo_res(&st95context->spicontext,  in st95hf_echo_command()
318 		dev_err(&st95context->spicontext.spidev->dev,  in st95hf_echo_command()
326 	dev_err(&st95context->spicontext.spidev->dev, "err: echo res is 0x%x\n",  in st95hf_echo_command()
474 static int st95hf_send_spi_reset_sequence(struct st95hf_context *st95context)  in st95hf_send_spi_reset_sequence()  argument
479 	result = st95hf_spi_send(&st95context->spicontext,  in st95hf_send_spi_reset_sequence()
484 		dev_err(&st95context->spicontext.spidev->dev,  in st95hf_send_spi_reset_sequence()
493 	st95hf_send_st95enable_negativepulse(st95context);  in st95hf_send_spi_reset_sequence()
501 static int st95hf_por_sequence(struct st95hf_context *st95context)  in st95hf_por_sequence()  argument
506 	st95hf_send_st95enable_negativepulse(st95context);  in st95hf_por_sequence()
511 		result = st95hf_echo_command(st95context);  in st95hf_por_sequence()
513 		dev_dbg(&st95context->spicontext.spidev->dev,  in st95hf_por_sequence()
522 			st95hf_send_st95enable_negativepulse(st95context);  in st95hf_por_sequence()
524 			st95hf_send_spi_reset_sequence(st95context);  in st95hf_por_sequence()
533 static int iso14443_config_fdt(struct st95hf_context *st95context, int wtxm)  in iso14443_config_fdt()  argument
536 	struct device *dev = &st95context->spicontext.spidev->dev;  in iso14443_config_fdt()
537 	struct nfc_digital_dev *nfcddev = st95context->ddev;  in iso14443_config_fdt()
544 	    st95context->fwi < 4)  in iso14443_config_fdt()
545 		st95context->fwi = 4;  in iso14443_config_fdt()
549 		new_params[0].new_param_val = st95context->fwi;  in iso14443_config_fdt()
558 		result = st95hf_send_recv_cmd(st95context,  in iso14443_config_fdt()
570 		result = secondary_configuration_type4a(st95context);  in iso14443_config_fdt()
578 		result = st95hf_send_recv_cmd(st95context,  in iso14443_config_fdt()
590 		result = secondary_configuration_type4b(st95context);  in iso14443_config_fdt()
1072 	struct st95hf_context *st95context;  in st95hf_probe()  local
1077 	st95context = devm_kzalloc(&nfc_spi_dev->dev,  in st95hf_probe()
1080 	if (!st95context)  in st95hf_probe()
1083 	spicontext = &st95context->spicontext;  in st95hf_probe()
1087 	st95context->fwi =  in st95hf_probe()
1091 		st95context->st95hf_supply =  in st95hf_probe()
1094 		if (IS_ERR(st95context->st95hf_supply)) {  in st95hf_probe()
1096 			return PTR_ERR(st95context->st95hf_supply);  in st95hf_probe()
1099 		ret = regulator_enable(st95context->st95hf_supply);  in st95hf_probe()
1115 	st95context->enable_gpio =  in st95hf_probe()
1119 	if (!gpio_is_valid(st95context->enable_gpio)) {  in st95hf_probe()
1121 		ret = st95context->enable_gpio;  in st95hf_probe()
1125 	ret = devm_gpio_request_one(&nfc_spi_dev->dev, st95context->enable_gpio,  in st95hf_probe()
1138 					      (void *)st95context) < 0) {  in st95hf_probe()
1155 	ret = st95hf_send_spi_reset_sequence(st95context);  in st95hf_probe()
1162 	ret = st95hf_por_sequence(st95context);  in st95hf_probe()
1169 	st95context->ddev = nfc_digital_allocate_device(&st95hf_nfc_digital_ops,  in st95hf_probe()
1174 	if (!st95context->ddev) {  in st95hf_probe()
1179 	st95context->nfcdev = st95context->ddev->nfc_dev;  in st95hf_probe()
1180 	nfc_digital_set_parent_dev(st95context->ddev, &nfc_spi_dev->dev);  in st95hf_probe()
1182 	ret =  nfc_digital_register_device(st95context->ddev);  in st95hf_probe()
1184 		dev_err(&st95context->nfcdev->dev, "st95hf registration failed\n");  in st95hf_probe()
1189 	nfc_digital_set_drvdata(st95context->ddev, st95context);  in st95hf_probe()
1191 	sema_init(&st95context->exchange_lock, 1);  in st95hf_probe()
1192 	mutex_init(&st95context->rm_lock);  in st95hf_probe()
1197 	nfc_digital_free_device(st95context->ddev);  in st95hf_probe()
1199 	if (st95context->st95hf_supply)  in st95hf_probe()
1200 		regulator_disable(st95context->st95hf_supply);  in st95hf_probe()